e.getMessage(), e);
        } catch (final Exception e) {
            logger.warn("[RAG] Failed to process stream request. sessionId={}, message={}", sessionId, e.getMessage(), e);
            if (!response.isCommitted()) {
                try (final PrintWriter writer = response.getWriter()) {
                    sendSseEvent(writer, "error", Map.of("message", "Internal server error", "errorCode", LlmException.ERROR_UNKNOWN));